import 'dart:math';

import 'package:flutter/material.dart';

class BuildingList extends StatefulWidget {
  BuildingList({super.key, required this.point});

  String point;

  @override
  State<BuildingList> createState() => _RoomListState();
}

class _RoomListState extends State<BuildingList> {
  Map data = {
    "point": "", // 记录小区信息
    "size": 0, // 随机产生楼栋的数量
    "type": "", // 小区的楼栋名称(size>4 单元, size<=4 号楼)
  };

  @override
  void initState() {
    super.initState();
    fakeData(widget.point);
  }

//随机伪造楼栋信息
  fakeData(point) {
    // 1.1 随机产生楼栋的数量
    Random random = Random();
    int size = random.nextInt(6) + 2; // 3-8
    // 1.2 确定小区楼栋的名称
    String type = size > 5 ? '单元' : '号楼';
    // 1.3 更新数据
    setState(() {
      data = {
        "point": widget.point,
        "size": size,
        "type": type,
      };
      print(data);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text('选择楼栋'),
        ),
        body: ListView.builder(
          itemBuilder: (BuildContext context, int index) {
            return GestureDetector(
              onTap: (){
                // 跳转到房间列表页面
                  Navigator.pushNamed(context, '/room_list', arguments: {
                  'point': data['point'],
                  'building': '${index + 1}${data['type']}'
                });
              },
              child: Container(
                color: Colors.white,
                padding: const EdgeInsets.all(10),
                child: Row(children: [
                  Expanded(
                      child:
                          Text('${data['point']}${index + 1}${data['type']}')),
                  const Row(children: [
                    Icon(Icons.arrow_forward_ios,
                        size: 16, color: Colors.black),
                  ])
                ])),
            );
          },
          itemCount: data['size'],
        ));
  }
}
